Draining system for cargo of sand-boats.



A. G. WALTER.

DRAlNlNG SYSTEM FOR CARGO 0F SAND BOATS.

APPLICATION FILED 050.14.1914.

0 M. m M l 9H m Mm 3 AE wu m 6. 5 7

COLUMBIA PLANOGRAPH C0,,WASHINGTON. D. c.

A. G. WALTER.

DRAINING SYSTEM FOR CARGO 0F SAND BOATS.

APPLICATION FILED 050.1 1.1914.

2 SHEETSSHEET 2.

firmur Walk?" Wihweoozo G No: we 1 COLUMBIA PLANOURAPH C0.,\v,\smNuToN. n. c.

ARTHUR G. WALTER, OF GRAND HAVEN, MICHIGAN.

.DRAINING SYSTEM FOR CARGO 0F SAND-BOATS.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed December 14, 1914. Serial No. 877,141.

To all whomit may concern:

Be it known that I, ARTHUR G. WVALTER, a citizen of the United States, residing at Grand Haven, in the county of Ottawa and State of Michigan, have invented certain new and useful Improvements in Draining Systems for Cargo of Sand-Boats, of which the following is a specification.

This invention relates to water craft employed for hauling sand or gravel, and its object is to provide novel and improved means for draining the cargo of water.

The herein stated object is attained by means of a combination and arrangement of parts to be hereinafter described and claimed, reference being had to the accompanying drawings in which Figure 1 is a plan View of the invention, partly broken away; Fig. 2 is a crosssection on the line 22 of Fig. 1, and Fig. 8 is an enlarged cross-section on the line 3-3 of Fig. 1.

Referring specifically to the drawings, 10 denotes the hull of a boat or other water craft designed more particularly for hauling sand or gravel. The sand, taken up from the bottom of a lake or other body of water, and dumped into the hold 11 of the boat, contains much water, and as it is desirable to remove this water from the load of sand, a novel means for draining the same has been devised which will now be described.

In the hold 11, close to the bottom thereof, are mounted strainers composed of perforated cylinders 12 covered by a fine mesh screening material 18, and closed at the ends by caps 14, the perforations of the cylinder being indicated at 15. These cylinders extend transversely of the hold and they are held slightly spaced from the bottom of the hold by the end caps. The drawing shows four cylinders, but their number is immaterial and may be varied according to the size of the hold. The endcaps are provided with wash-out plugs 16.

To one of the end caps 14: of each cylinder 12 is connected a suction pipe 17 having a shut-off valve 18 and a vacuum gage 19. These suction pipes lead and are connected to a manifold 20 having a connection 21 with a suction pump 22. The manifold also has a gravity outlet 23 and a high pressure wash water inlet 24, provided with valves 25 and 26, respectively.

Across each cylinder 12 extends a guard or shield comprising two plates 27 having outstanding marginal flanges, and connected in parallel, spaced relation by a row of studs 28 passing through the flanges at the adjacent edges of the plates. The space between the plates allows the sand to drop therethrough on the cylinder. The guard may also be a perforated plate.

' In operation, the water in the sand works toward the bottom of the hold 11, and upon starting the pump 22, the water is sucked into the cylinders 12, the sand being kept out of the latter by the screen 13. If the pump should become disabled, the water may be allowed to discharge from the cylinders by gravity upon opening the valve It will be noted that the connection of the pipes 17 with the end caps 14 of the cylinders is made at the bottom of the latter so that they will be completely emptied of water. If the screen becomes clogged it may be cleaned by turning water under high pressure into the cylinders through the pipes 17, the connection with the water supply being made at the inlet 24. The plugs 16 permit access to the interior of the cylinders for cleaning the same.

In order to drain the sand which is resting on the bottom of the hold 11, beneath the cylinders 12, there is made in the bottom of the hold, beneath each cylinder, a drain outlet opening into a trap 29, and covered by a perforated disk 30 on top of which latter is located a fine meshed screen 31. From each trap a pipe 32 leads and is connected to the suction pipe 17 of the respective cylinders. Thus, when the pump 22 is in operation, the water is also removed from the sand which has fallen below the working level of the cylinders. The water may also be allowed to discharge by gravity into the trap. In the wall of the hold 11 are mounted stufling boxes 33 through which the pipes 17 pass.

I claim:

1. The combination with a vessel, of a series of screen cylinders mounted in the bottom of the cargo hold, suction pipes connected to the cylinders, a manifold from which said pipes extend, a suction pump connected to the manifold, a gravity outlet from the manifold, and a wash water connection to the manifold.

2. The combination with a vessel, of a screen cylinder mounted in the bottom of the cargo hold, a suction pump connected to said cylinder, and a screened drain trap opening to the bottom of the cargo hold beneath the cylinder, and having a connection With the suction pump. 7

3. The combination With'a vessel, of a series of screen cylinders mounted in the bottom of the cargo hold, suction pipes connected to the cylinders, a manifold from Which said pipes extend, a suction pump connected to the manifold, a gravity outlet from the manifold, a Wash Water connection In testimony whereof I afiiX my signature in presence of two Witnesses.

ARTHUR G. WALTER.

Witnesses:

S. J. LEHRER, H. G. BATOHELOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

